GoKawiilEthereum's Glamsterdam Upgrade to Enshrine Proposer-Builder Separation, Testing on Hoodi Oct 26
The Ethereum Foundation said the Glamsterdam upgrade will activate on the Hoodi testnet at epoch 132,352 on October 26, 2026, bringing EIP-7732 into the protocol's consensus rules. That change writes proposer-builder separation directly into Ethereum, replacing today's out-of-protocol arrangement with a payload timeliness committee that verifies builders delivered blocks and blob data on schedule. The upgrade bundles 19 EIPs total, including EIP-7928 for enforced block-level access lists plus several smaller technical improvements.
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Moving proposer-builder separation into the protocol itself could reduce reliance on trusted intermediaries and side agreements that currently mediate the relationship between validators and block builders. By having the network verify timely delivery of blocks and blob data, Ethereum may close gaps that have previously let builders or relays behave unreliably without consequence. The accompanying access-list changes suggest the Ethereum Foundation is also working toward more predictable, explicit pricing of state access, which could affect how transactions and smart contracts are priced going forward.
- Glamsterdam combines the Amsterdam execution-layer and Gloas consensus-layer upgrades, testing on Hoodi testnet October 26, 2026.
- EIP-7732 enshrines proposer-builder separation using a payload timeliness committee to verify on-time block and blob delivery.
- The upgrade bundles 19 EIPs, including EIP-7928 for block-level access lists and several smaller protocol tweaks.
Source: techreport.com — Krishi Chowdhary, 2026-10-18
Published there as: “Ethereum’s Glamsterdam Upgrade Enshrines Proposer-Builder Separation on Hoodi Testnet October 26”
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